CN205880560U - Ultrasonic wave gas table control system - Google Patents
Ultrasonic wave gas table control system Download PDFInfo
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- CN205880560U CN205880560U CN201620493379.9U CN201620493379U CN205880560U CN 205880560 U CN205880560 U CN 205880560U CN 201620493379 U CN201620493379 U CN 201620493379U CN 205880560 U CN205880560 U CN 205880560U
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Abstract
The utility model discloses an ultrasonic wave gas table control system, including the controller, the controller is connected with valve control circuit, debugging circuit, failure alarm circuit, gas and reveals monitoring module, ultrasonic wave sampling circuit, temperature sampling circuit and 4G wireless communication module, and ultrasonic wave sampling circuit is connected with ultrasonic transducer, and the controller has connected gradually concentrator, 4G basic station, server through 4G wireless communication module, and the server electricity is connected with the monitor terminal who is located the surveillance center. The utility model discloses but the running state of real -time supervision singlechip will send the chimes of doom in case work appears unusually, and the warning staff handles through going, still improve the measurement accuracy of ultrasonic wave gas table with the control mode through improving ultrasonic wave gas table, reduce whole volume and weight that the ultrasonic wave gas was shown.
Description
Technical field
This utility model belongs to areas of information technology, particularly relates to a kind of kilowatt meter reading-out system.
Background technology
In recent years, along with propelling, the development of IT technology and the innovation of IT application in enterprise, people are more and more higher to the dependency of IT system.Single-chip microcomputer is to use very large scale integration technology the central singlechip CPU with data-handling capacity, random access memory ram, read only memory ROM, multiple I/O mouth and interruption system, the functions such as timer/counter (may also include display driver circuit, pulse-width modulation circuit, analog multiplexer, the circuit such as A/D transducer) it is integrated on one piece of silicon chip the little and perfect microcomputer system constituted, have with low cost, compatible good, the advantages such as the speed of service is fast, but single-chip microcomputer is in operation and also there will be some faults, if single-chip microcomputer breaks down and can not find in time and process, then can affect the properly functioning of single-chip microcomputer, even result in burning of single-chip microcomputer.For needing the industry of the continuous non-stop run of single-chip microcomputer, staff can not always be to maintain good attention, without a kind of prior-warning device, it will lavish labor on, also affects the healthy of staff simultaneously.
Utility model content
In view of the above-mentioned problems in the prior art, main purpose of the present utility model is to provide a kind of ultrasonic wave gas meter control system, can monitor the running status of single-chip microcomputer in real time, once occur that operation irregularity will send chimes of doom, warning staff processes through row；Also improve the certainty of measurement of ultrasonic wave gas meter with the control mode by improving ultrasonic wave gas meter, reduce overall volume and the weight of ultrasonic wave gas meter.
The technical solution adopted in the utility model is as follows:
A kind of ultrasonic wave gas meter control system, including controller, controller connects valve controling circuit, debugging circuit, failure alarm circuit, gas leakage monitoring module, ultrasound wave sample circuit, temperature sampling circuit and 4G wireless communication module, ultrasound wave sample circuit connects ultrasonic transducer, controller is connected with concentrator, 4G base station, server in turn by 4G wireless communication module, and server is electrically connected with the monitor terminal being positioned at Surveillance center.
Further, controller is also associated with memorizer and display.
nullFurther，Failure alarm circuit includes relay J、Chip IC 1、Chip IC 2 and audion V1，The VCC foot of controller connects the contact J-1 of relay J，The other end of the contact J-1 of relay J connects power supply U1，The GND foot ground connection of controller，The P1 foot of controller connects the pin 1 of chip IC 3，The pin 2 of chip IC 3 connects the pin 1 of chip IC 4，The pin 3 of chip IC 3 connects resistance R1 and electric capacity C1，The other end of electric capacity C1 connects resistance R2、Resistance R3、The pin 2 of chip IC 1 and the pin 6 of chip IC 1，The pin 4 of chip IC 3 connects the other end of resistance R2，The other end of resistance R1 connects resistance R4、The pin 4 of chip IC 1、The pin 8 of chip IC 1、The pin 8 of chip IC 2、Loudspeaker B and power supply U2，The other end of resistance R3 connects pin 1 ground connection of electric capacity C2 and chip IC 1，The pin 5 of chip IC 1 connects the other end of electric capacity C2，The other end of resistance R4 connects resistance R5 and the pin 7 of chip IC 2，The other end of resistance R5 connects electric capacity C3、The pin 2 of chip IC 2 and the pin 6 of chip IC 2，The other end of electric capacity C3 connects electric capacity C4、The pin 1 of chip IC 2 ground connection，The pin 3 of chip IC 2 connects electric capacity C5，The other end of electric capacity C5 connects the other end of loudspeaker B，The pin 3 of chip IC 4 connects resistance R6 and resistance R7，The other end of resistance R6 connects resistance R8、Power supply U3、The pin 4 of chip IC 5 and the pin 8 of chip IC 5，The base stage of the other end connecting triode V1 of resistance R7，The colelctor electrode of audion V1 connects the other end and the electric capacity C6 of resistance R8，The other end of electric capacity C6 connects resistance R10、The negative electrode of diode D1、The pin 2 of chip IC 5 and the pin 6 of chip IC 5，The emitter stage of audion V1 connects anode and the resistance R9 of diode D1，The pin 4 of chip IC 4 connects the other end of resistance R9、The other end of resistance R10、The anode of diode D4、The negative electrode of diode D5、The pin 1 of relay J and chip IC 5，The pin 5 of chip IC 5 connects the other end of electric capacity C7，The pin 3 of chip IC 5 connects the anode of diode D3，The negative electrode of diode D3 connects the negative electrode of diode D2、Resistance R11、The pin 4 of resistance R12 and chip IC 2，The other end of resistance R11 connects negative electrode and the other end of relay J of diode D4，The other end of resistance R12 connects the anode of diode D5.
Further, gas leakage monitoring module includes gas sensor MQ-4, slide rheostat W, resistance one R21, resistance two R2 and electric capacity one C21, it is connected with power circuit after the heating wire series connection slide rheostat W of gas sensor MQ-4, the test side A of gas sensor MQ-4 is connected with power circuit, test side B is connected with the base stage of audion one T1, the colelctor electrode of audion one T1 is connected with UA555 chip, and the outfan of UA555 chip is connected with the control end of silicon controlled rectifier (SCR) SCR after being sequentially connected in series resistance four R4 and diode one D21.
nullFurther，Valve controling circuit includes drive circuit and motor valve MOTA、MOTB，Described drive circuit includes 4 audions，Wherein the first audion V41 and the second audion V42 is PNP type audion，3rd audion V43 and the 4th audion V44 is NPN type audion，The emitter stage of described first audion V41 connects capacitor power VCC、Base stage connects the first resistance R41、Colelctor electrode connects the colelctor electrode of the 3rd audion V43，The emitter stage of described second audion V42 connects battery supply V-BATT、Base stage connects the second resistance R42、Colelctor electrode connects the colelctor electrode of the 4th audion V44，The base stage of described 3rd audion V43 connects the 3rd resistance R43、Grounded emitter，The base stage of described 4th audion V44 connects the 4th resistance R44、Grounded collector；The colelctor electrode of described first audion V41 and the colelctor electrode of described 3rd audion V43 are connected to the valve MOTA end of motor valve, the colelctor electrode of described second audion V42 and the colelctor electrode of described 4th audion V44 and are connected to the valve MOTB end of motor valve；Described first resistance R41 and described second resistance R42 connects the first pass valve control line CLOSE-A and second of controller respectively and closes valve control line CLOSE-B, described 3rd resistance R43 and described 4th resistance R44 and connect the first valve opening control line OPEN-A and the second valve opening control line OPEN-B of controller respectively.
In sum, compared with prior art, the beneficial effects of the utility model are:
This utility model have employed failure alarm circuit, can monitor the running status of single-chip microcomputer in real time, once occurs that operation irregularity will send chimes of doom, and warning staff processes through row；Gas leakage monitoring module can monitor the leakage of combustion gas, it is to avoid gas leakage and cannot process in time；This utility model is avoided by increasing the volume of ultrasonic wave gas meter simultaneously, and improves the control system of ultrasonic wave gas meter, as increased temperature sampling circuit, arranges valve controling circuit and improves the certainty of measurement of ultrasonic wave gas meter further.
Accompanying drawing explanation
This utility model will illustrate by example and with reference to the appended drawing, wherein:
Fig. 1 is system structure schematic diagram of the present utility model；
Fig. 2 is failure alarm circuit schematic diagram in this utility model；
Fig. 3 is the circuit diagram of gas leakage monitoring module in this utility model；
Fig. 4 is valve controling circuit schematic diagram in this utility model.
Detailed description of the invention
All features disclosed in this specification, or disclosed all methods or during step, in addition to mutually exclusive feature and/or step, all can combine by any way.
Embodiment 1
nullAs shown in Fig. 1 ~ Fig. 4: a kind of ultrasonic wave gas meter control system of the present embodiment，Including controller 50，Controller 50 connects valve controling circuit 57、Ultrasonic wave gas meter is debugged by debugging circuit 58(for user)、Failure alarm circuit 52、Gas leakage monitoring module 51、Ultrasound wave sample circuit 56、Temperature sampling circuit 55、4G wireless communication module 53、Memorizer and display 54(are for showing the ruuning situation of ultrasonic wave gas meter)，Ultrasound wave sample circuit 56 connects ultrasonic transducer，Controller 50 is connected with concentrator 59 in turn by 4G wireless communication module 53、4G base station 60、Server 61，Server 61 is electrically connected with the monitor terminal 62 being positioned at Surveillance center，Concentrator 59、4G base station 60、Server 61 is all to be communicated by 4G net，This 4G network technology is the most ripe，Do not remake and specifically repeat.
Described ultrasound wave sample circuit 56 has two input interfaces, two input interfaces are connected with two ultrasonic transducers respectively, and described ultrasound wave sample circuit is identical to the distance of two ultrasonic transducers, the signal transmission error that two ultrasonic transducers cause because of holding wire length difference can be preferably minimized by this set.
Described ultrasound wave sample circuit 56 detects between two ultrasonic transducers ultrasonic signal and calculates its time difference transmitting signal each other.
Described debugging circuit 5 is infrared debugging circuit, thus supports that user uses the debugging end with infrared function to debug ultrasonic wave gas meter.
nullValve controling circuit 57，For controlling the valve in ultrasonic wave gas meter，Including drive circuit and motor valve MOTA、MOTB，Described drive circuit includes 4 audions，Wherein the first audion V41 and the second audion V42 is PNP type audion，3rd audion V43 and the 4th audion V44 is NPN type audion，The emitter stage of described first audion V41 connects capacitor power VCC、Base stage connects the first resistance R41、Colelctor electrode connects the colelctor electrode of the 3rd audion V43，The emitter stage of described second audion V42 connects battery supply V-BATT、Base stage connects the second resistance R42、Colelctor electrode connects the colelctor electrode of the 4th audion V44，The base stage of described 3rd audion V43 connects the 3rd resistance R43、Grounded emitter，The base stage of described 4th audion V44 connects the 4th resistance R44、Grounded collector；The colelctor electrode of described first audion V41 and the colelctor electrode of described 3rd audion V43 are connected to the valve MOTA end of motor valve, the colelctor electrode of described second audion V42 and the colelctor electrode of described 4th audion V44 and are connected to the valve MOTB end of motor valve；Described first resistance R41 and described second resistance R42 connects the first pass valve control line CLOSE-A and second of controller respectively and closes valve control line CLOSE-B, described 3rd resistance R43 and described 4th resistance R44 and connect the first valve opening control line OPEN-A and the second valve opening control line OPEN-B of controller respectively.
Gas leakage monitoring module includes gas sensor MQ-4, slide rheostat W, resistance R1, resistance R2 and electric capacity C1, it is connected with power circuit after the heating wire series connection slide rheostat W of gas sensor MQ-4, the test side A of gas sensor MQ-4 is connected with power circuit, test side B is connected with the base stage of audion T1, the colelctor electrode of audion T1 is connected with UA555 chip, and the outfan of UA555 chip is connected with the control end of silicon controlled rectifier (SCR) SCR after being sequentially connected in series resistance R4 and diode one D1.Electric capacity C1 and electric capacity C2 is for the amplitude of stable detection signal.
Controller is single-chip microcomputer, and single-chip microcomputer is connected with single-chip microcomputer failure alarm circuit 48.nullFailure alarm circuit includes relay J、Chip IC 1、Chip IC 2 and audion V1，Controller 50(i.e. single-chip microcomputer) VCC foot connect relay J contact J-1，The other end of the contact J-1 of relay J connects power supply U1，The GND foot ground connection of controller 50，The P1 foot of controller 50 connects the pin 1 of chip IC 3，The pin 2 of chip IC 3 connects the pin 1 of chip IC 4，The pin 3 of chip IC 3 connects resistance R1 and electric capacity C1，The other end of electric capacity C1 connects resistance R2、Resistance R3、The pin 2 of chip IC 1 and the pin 6 of chip IC 1，The pin 4 of chip IC 3 connects the other end of resistance R2，The other end of resistance R1 connects resistance R4、The pin 4 of chip IC 1、The pin 8 of chip IC 1、The pin 8 of chip IC 2、Loudspeaker B and power supply U2，The other end of resistance R3 connects pin 1 ground connection of electric capacity C2 and chip IC 1，The pin 5 of chip IC 1 connects the other end of electric capacity C2，The other end of resistance R4 connects resistance R5 and the pin 7 of chip IC 2，The other end of resistance R5 connects electric capacity C3、The pin 2 of chip IC 2 and the pin 6 of chip IC 2，The other end of electric capacity C3 connects electric capacity C4、The pin 1 of chip IC 2 ground connection，The pin 3 of chip IC 2 connects electric capacity C5，The other end of electric capacity C5 connects the other end of loudspeaker B，The pin 3 of chip IC 4 connects resistance R6 and resistance R7，The other end of resistance R6 connects resistance R8、Power supply U3、The pin 4 of chip IC 5 and the pin 8 of chip IC 5，The base stage of the other end connecting triode V1 of resistance R7，The colelctor electrode of audion V1 connects the other end and the electric capacity C6 of resistance R8，The other end of electric capacity C6 connects resistance R10、The negative electrode of diode D1、The pin 2 of chip IC 5 and the pin 6 of chip IC 5，The emitter stage of audion V1 connects anode and the resistance R9 of diode D1，The pin 4 of chip IC 4 connects the other end of resistance R9、The other end of resistance R10、The anode of diode D4、The negative electrode of diode D5、The pin 1 of relay J and chip IC 5，The pin 5 of chip IC 5 connects the other end of electric capacity C7，The pin 3 of chip IC 5 connects the anode of diode D3，The negative electrode of diode D3 connects the negative electrode of diode D2、Resistance R11、The pin 4 of resistance R12 and chip IC 2，The other end of resistance R11 connects negative electrode and the other end of relay J of diode D4，The other end of resistance R12 connects the anode of diode D5.Diode D5 is light emitting diode.
The model of chip IC 1, chip IC 2 and chip IC 5 is NE555, and the model of chip IC 3 and chip IC 4 is 4N25.
nullThe operation principle of failure alarm circuit is: single-chip microcomputer connects the optical coupling isolation circuit being made up of chip IC 3 and chip IC 4 by its P1 pin，The other end connection monitoring circuit of optical coupling isolation circuit，Chip IC 1 and chip IC 2 are all operated in monostable delay state，The calculation of delay time is T=1.1RC，Chip IC 5 is a controlled multivibrator，Frequency of oscillation is about 2KHZ，When single-chip microcomputer is working properly，The time interval of the positive pulse that P1 human hair combing waste goes out is less than the delay time of chip IC 1，Pulse through chip IC 3 optical coupling from time，Photoswitch is open-minded，Discharge in the loop that the most charged electric capacity C1 forms through chip IC 3 and resistance R2，I.e. when single-chip microcomputer is normal，Voltage on electric capacity C1 is less than 2/3U2，Even if 2 feet of chip IC 1 and 6 foot voltages are higher than 1/3U2，Chip IC 5 will not overturn，Outfan 3 foot is low level，Diode D1 ends，Relay J is failure to actuate，When single-chip microcomputer operation troubles，Its P1 foot is to become big in low level or pulse spacing，Then chip IC 1 is after a period of time，Outfan 3 foot becomes high level，Diode D1 turns on，Relay turns on，Its normally-closed contact J-1 disconnects，Cut off microcontroller power supply，Simultaneously，4 feet of chip IC 2 are high level，Start vibration，Chimes of doom is sent by loudspeaker B.The ruuning situation of single-chip microcomputer, by 555 chip composition monitoring circuits, is monitored, operation irregularity once occurs by this circuit in real time, will send chimes of doom, and disconnect the power supply of single-chip microcomputer, prevent single-chip microcomputer to be burned out, circuit uses light-coupled isolation technology simultaneously, adds the anti-interference of circuit.
This utility model uses such scheme, the operation that single-chip microcomputer is normal, stable can be ensured, once there is operation irregularity in single-chip microcomputer, chimes of doom will be sent by the loudspeaker of single-chip microcomputer failure alarm circuit, and disconnect the power supply of single-chip microcomputer, preventing single-chip microcomputer to be burned out, circuit uses light-coupled isolation technology simultaneously, adds the anti-interference of circuit.
Description of the present utility model and application are illustrative, are not wishing to limit in the above-described embodiments scope of the present utility model.The deformation of embodiments disclosed herein and change are possible, and for those skilled in the art, embodiment is replaced and the various parts of equivalence are known.It should be appreciated by the person skilled in the art that in the case of without departing from spirit or essential characteristics of the present utility model, this utility model can otherwise, structure, layout, ratio, and realize with other elements, material and parts.
Claims (5)
1. a ultrasonic wave gas meter control system, it is characterized in that, including controller (50), controller (50) connects valve controling circuit (57), debugging circuit (58), failure alarm circuit (52), gas leakage monitoring module (51), ultrasound wave sample circuit (56), temperature sampling circuit (55) and 4G wireless communication module (53), ultrasound wave sample circuit (56) connects ultrasonic transducer, controller (50) is connected with concentrator (59) in turn by 4G wireless communication module (53), 4G base station (60), server (61), server (61) is electrically connected with the monitor terminal (62) being positioned at Surveillance center.
2. a kind of ultrasonic wave gas meter control system as claimed in claim 1, it is characterised in that controller (50) is also associated with memorizer and display (54).
null3. a kind of ultrasonic wave gas meter control system as claimed in claim 1，It is characterized in that，Failure alarm circuit (52) includes relay J、Chip IC 1、Chip IC 2 and audion V1，The VCC foot of controller (50) connects the contact J-1 of relay J，The other end of the contact J-1 of relay J connects power supply U1，The GND foot ground connection of controller (50)，The P1 foot of controller (50) connects the pin 1 of chip IC 3，The pin 2 of chip IC 3 connects the pin 1 of chip IC 4，The pin 3 of chip IC 3 connects resistance R1 and electric capacity C1，The other end of electric capacity C1 connects resistance R2、Resistance R3、The pin 2 of chip IC 1 and the pin 6 of chip IC 1，The pin 4 of chip IC 3 connects the other end of resistance R2，The other end of resistance R1 connects resistance R4、The pin 4 of chip IC 1、The pin 8 of chip IC 1、The pin 8 of chip IC 2、Loudspeaker B and power supply U2，The other end of resistance R3 connects pin 1 ground connection of electric capacity C2 and chip IC 1，The pin 5 of chip IC 1 connects the other end of electric capacity C2，The other end of resistance R4 connects resistance R5 and the pin 7 of chip IC 2，The other end of resistance R5 connects electric capacity C3、The pin 2 of chip IC 2 and the pin 6 of chip IC 2，The other end of electric capacity C3 connects electric capacity C4、The pin 1 of chip IC 2 ground connection，The pin 3 of chip IC 2 connects electric capacity C5，The other end of electric capacity C5 connects the other end of loudspeaker B，The pin 3 of chip IC 4 connects resistance R6 and resistance R7，The other end of resistance R6 connects resistance R8、Power supply U3、The pin 4 of chip IC 5 and the pin 8 of chip IC 5，The base stage of the other end connecting triode V1 of resistance R7，The colelctor electrode of audion V1 connects the other end and the electric capacity C6 of resistance R8，The other end of electric capacity C6 connects resistance R10、The negative electrode of diode D1、The pin 2 of chip IC 5 and the pin 6 of chip IC 5，The emitter stage of audion V1 connects anode and the resistance R9 of diode D1，The pin 4 of chip IC 4 connects the other end of resistance R9、The other end of resistance R10、The anode of diode D4、The negative electrode of diode D5、The pin 1 of relay J and chip IC 5，The pin 5 of chip IC 5 connects the other end of electric capacity C7，The pin 3 of chip IC 5 connects the anode of diode D3，The negative electrode of diode D3 connects the negative electrode of diode D2、Resistance R11、The pin 4 of resistance R12 and chip IC 2，The other end of resistance R11 connects negative electrode and the other end of relay J of diode D4，The other end of resistance R12 connects the anode of diode D5.
4. a kind of ultrasonic wave gas meter control system as claimed in claim 1, it is characterized in that, gas leakage monitoring module (51) includes gas sensor MQ-4, slide rheostat W, resistance one R21, resistance two R2 and electric capacity one C21, it is connected with power circuit after the heating wire series connection slide rheostat W of gas sensor MQ-4, the test side A of gas sensor MQ-4 is connected with power circuit, test side B is connected with the base stage of audion one T1, the colelctor electrode of audion one T1 is connected with UA555 chip, the outfan of UA555 chip is connected with the control end of silicon controlled rectifier (SCR) SCR after being sequentially connected in series resistance four R4 and diode one D21.
null5. a kind of ultrasonic wave gas meter control system as described in any one of claim 1 ~ 4，It is characterized in that，Valve controling circuit (57) includes drive circuit and motor valve MOTA、MOTB，Described drive circuit includes 4 audions，Wherein the first audion V41 and the second audion V42 is PNP type audion，3rd audion V43 and the 4th audion V44 is NPN type audion，The emitter stage of described first audion V41 connects capacitor power VCC、Base stage connects the first resistance R41、Colelctor electrode connects the colelctor electrode of the 3rd audion V43，The emitter stage of described second audion V42 connects battery supply V-BATT、Base stage connects the second resistance R42、Colelctor electrode connects the colelctor electrode of the 4th audion V44，The base stage of described 3rd audion V43 connects the 3rd resistance R43、Grounded emitter，The base stage of described 4th audion V44 connects the 4th resistance R44、Grounded collector；The colelctor electrode of described first audion V41 and the colelctor electrode of described 3rd audion V43 are connected to the valve MOTA end of motor valve, the colelctor electrode of described second audion V42 and the colelctor electrode of described 4th audion V44 and are connected to the valve MOTB end of motor valve；Described first resistance R41 and described second resistance R42 connects the first pass valve control line CLOSE-A and second of controller respectively and closes valve control line CLOSE-B, described 3rd resistance R43 and described 4th resistance R44 and connect the first valve opening control line OPEN-A and the second valve opening control line OPEN-B of controller respectively.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620493379.9U CN205880560U (en) | 2016-05-27 | 2016-05-27 | Ultrasonic wave gas table control system |
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| CN201620493379.9U CN205880560U (en) | 2016-05-27 | 2016-05-27 | Ultrasonic wave gas table control system |
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| CN205880560U true CN205880560U (en) | 2017-01-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106643955A (en) * | 2017-02-20 | 2017-05-10 | 重庆机床(集团)有限责任公司 | Flow monitoring controller |
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2016
- 2016-05-27 CN CN201620493379.9U patent/CN205880560U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106643955A (en) * | 2017-02-20 | 2017-05-10 | 重庆机床(集团)有限责任公司 | Flow monitoring controller |
| CN106643955B (en) * | 2017-02-20 | 2023-04-07 | 重庆机床(集团)有限责任公司 | Flow monitoring controller |
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| TR01 | Transfer of patent right |
Effective date of registration: 20170619 Address after: Building software No. 662 410000 Hunan province Yuelu District City Lugu Avenue (Changsha professional building No. 539) Patentee after: New Austrian Gas Engineering Company Limited Address before: 030006 Taiyuan, Xiaodian District, Shanxi city street, No. 79 Patentee before: Shanxi Province Transport Science Research Institute |
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| TR01 | Transfer of patent right | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Building software No. 662 410000 Hunan province Yuelu District City Lugu Avenue (Changsha professional building No. 539) Patentee after: The new Austrian Energy Engineering Technology Co., Ltd. Address before: Building software No. 662 410000 Hunan province Yuelu District City Lugu Avenue (Changsha professional building No. 539) Patentee before: New Austrian Gas Engineering Company Limited |
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| CP01 | Change in the name or title of a patent holder |